Verfahren zur Bestimmung einer Verzögerung in einem Faserbasierten Netzwerk und Reflexionseinheit

Details

Veröffentlichungs-Nr.

EP4730672

Anmeldetag

13. Oktober 2025

Veröffentlichung

22. April 2026

Rechtsraum

EP

Abstract

The invention provides a method for determining a delay between a start port (121-i) at a star point (SP) of a network (100) with a star topology and an end port (199-i) of one of the branches (101-i) of the network (100), the method comprising at least the steps of: connecting (S10) a two-port bidirectional partially reflecting unit, TPBPRU (200; 300; 400), with a first port (201; 301; 401) to said branch (101-i) facing the direction of the start port (121-i), wherein the TPBPRU (200; 400; 500), is configured to partially reflect signals (CS1) entering it from both of its two ports (201, 209; 301, 309; 401, 409) with the same delay; connecting (S20) a calibrating delay measurement device (150) with a first calibration fiber (151) to a second port (209; 309; 409) of the TPBPRU (200); generating (S30) a first calibration signal (CS1) and inserting it into the first calibration fiber (151), while the start port (121-i) of the branch (101-i) is unconnected; and determining (S40) a delay between a receiving of a first reflection (R1-1) of the first calibration signal (CS1) generated at the TPBPRU (200; 300; 400) and a receiving of a second reflection (R1-2) of the first calibration signal (CS1) generated at the unconnected start port (121-i).

Anmelder

Firma

Adtran Networks SE

Land

🇩🇪 Deutschland